{"product_id":"grandio-automatic-roof-vent-opener","title":"Grandio Automatic Roof Vent Opener","description":"\u003cp\u003eThe Grandio Automatic Roof Vent Opener opens and closes a greenhouse roof vent on its own as the temperature changes, with no power, wiring or batteries. A wax-filled cylinder expands as the greenhouse warms and pushes the vent open; as it cools, a return spring closes it again. The movement is gradual, so airflow rises and falls with the heat instead of snapping fully open.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo electricity\u003c\/strong\u003e – keeps working through power outages.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProportional opening\u003c\/strong\u003e – more airflow as heat builds, less as it cools.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits Grandio roof vents\u003c\/strong\u003e – Ascent, Elite, Element and Summit models.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSet and forget\u003c\/strong\u003e – protects plants from overheating when you're away.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperation\u003c\/td\u003e\n\u003ctd\u003eWax cylinder with return spring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower\u003c\/td\u003e\n\u003ctd\u003eNone required\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFits\u003c\/td\u003e\n\u003ctd\u003eGrandio Ascent, Elite, Element and Summit roof vents\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003eOne opener per roof vent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer SKU\u003c\/td\u003e\n\u003ctd\u003eAUTO-ROOF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eSupport\u003c\/h3\u003e\u003cp\u003eInstallation questions and missing or damaged parts are handled directly by Grandio's support team, and we'll help connect you.\u003c\/p\u003e","brand":"Grandio","offers":[{"title":"Default Title","offer_id":49602348810395,"sku":"AUTO-ROOF","price":89.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0746\/0614\/9787\/files\/auto-opener-3.jpg?v=1790024616","url":"https:\/\/offgridhorizon.com\/products\/grandio-automatic-roof-vent-opener","provider":"OffGrid Horizon","version":"1.0","type":"link"}